Grain-door.



No. 826,100. 7 PATENTED JULY 17, 1906.

- J. W. HAWN.

GRAIN DOOR.

APPLICATION FILED MAY 20.1905.

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JOHN W. HAWN, OF KANSAS CITY, MISSOURI, TO SAMUEL J. PETERSON AND ON E-FOURTH OF KANSAS CITY, MISSOURI.

ASSIGNOR OF ONE-HALF TO DAVID TAYLOR, BOTH GRAIN-DOOR.

Specification of Letters Patent.

Patented July 17, 1906.

Application filed May 20, 1905. Serial No. 261,440.

To all whom, it may concern:

Be it known that I, JOHN W. HAWN, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Grain-Doors; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to a car-door, and more particularly to a door for use on freightcars laden with loose grain.

The principal object of my invention is to provide a means for forming a tight joint between the door and the jambs when the door is closed to prevent the escape of the grain while the car is in transit. In accomplishing this object I provide a door which is adapted to fit against the inner surface of the doorjambs and against which the edges of sliding plates carried by the door-jambs are drawn, making a tight joint between the door and the j ambs, which will prevent the escape of grain. While this construction will prevent the escape of grain While the parts are new, the surface of the door is liable to become marred, so that the plates will not have a perfect contact. To obviate this, I prefer to provide the door near each outer edge with a pair of vertically-arranged battens, each pair being so spaced as to leave a recess therebetween into Which the edge of the sliding plate may be drawn. Suitable means is provided for drawing each sliding plate against the door and between the battens when the latter are used.

The object in having while a pair of rigid plates would make a tight joint with the door the door would bind against them when being pried up to open the car. As the weight of the grain within the car is forcing the door outwardly against the jambs, making it impossible to force the door backwardly out of contact with the plates, the plates are made to draw away from the door, so that by placing a bar under its lower the plates slidably: mounted instead of rigid on the jambs is that edge the door may be pried up and the grain removed.

Further objects are to provide the improved details of construction which will presentlybe fully described, and pointed outin the claims, reference being had to the accompanying drawings, forming part of this specification, in which like reference-numerals refer to like parts throughout the several views, and in which- Figure 1 is a perspective view of a portion of the outside of a grain-car, showing the door-opening and the door-sections in their closed positions. Fig. 2 is a sectional view on the line 2 2, Fig. 1. Fig. 3 is a rear view of Fig. 1. Fig. 4 is a detail view of the upper door-section, shown in slight perspective. Fig. 5 is a detail view, in side elevation, of a portion of the lower door-section with a latch and sliding latch-plate. Fig. 6 is a top plan view of a portion of one of the door-jambs and latch-plates. Fig. 7 is a detail view of the upper latch-key. Fig. 8 isa detail view of the upper latch.

Referring more in detail to the parts, 9 represents the floor of anordinary grain-car.

10 represents the door-jambs, and 11 represents the top strip-connecting jambs 10. Projecting from jambs 10 are pins 13, which project through slots 14 in the plates 15, said plates being supported by pins 13 and adapt ed for horizontal movement thereon.

27 is a latch hinged to one of the door-sections, the loose member of which is slotted, and is provided with a keeper 28, havin a slot 29 therein, which registers with the 501] in the latch-body. Fitting within keeper 28 is a sliding latc -block 30, having a slot 31 therein extending diagonally from near its upper inner corner to near its lower outer corner and having at its lower end a buttonhole 32. Projecting from the face of plate 15 is a pin 33, adapted to fit through the slots in latch 27, keeper 28, and block 30. To prevent the escape of grain between the plates and jambs, should said jambs become worn, I provide each jamb 10 with a vertical groove 16, within which are loosely mounted the metal ribs 38, which fit against the sliding plates snugly enough to prevent the escape of grain, but without impeding the lateral movement of the plates.

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gage the outer edge of plate 15.

23 is an end bond on yoke 21, and 26 is a wedge-shaped binder fitting between bond 23 and the inner end 22 of hook 2 1. When it is desired to tighten the late and door to gether, the wedge is riven downwardly,

forcing the hook 2 1' backwardly, thereby drawing the late b ackwardly into the recess between the attens on the door.

In the use of my device the door-sections are set in position against the inner surface of the jambs, with the recesses between the battens registering with the edge of the sliding plate 15. The free member 27 of the latch is then swung around until the pin 33 projects through the slot in said member and through the slots in the keeper 28 and block 30. Block 30 is then forced downwardly, the travel of the diagonal slot drawing pin 33 and plate 15, to which said pin is attached, inwardly, forcing the edge of the plate into the recess between the battenson the door, the door meanwhile being held rigid against the jambs. I

After the *car is filled the wieght of the grain would hold the door firmly in position without the aid of the plates and hinges. In opening the car it is necessary for the door to be pried upwardly to. let the grain escape thereunder, as it would be im ossible for the door to be forced backwar 'ly a ainst the grain or forwardly against the jam s. With the sliding plates rigid on the jambs the door would be sure to bind against them unless raised evenly on all sides, a very difficult matter to accomplish. By sliding the plates out of contact with the door the latter is freed from any probability of binding. By providing the plates with a lock such as described the unfastening of the lock slides the plates out of contact with the door. In this way any one unfamiliar with the door would unconsciously operate the plates while unlocking the door.

The door may be in one or more sections, and one or more latches may be provided for each, if desired. WVhile in describing my door I have given prominence to the battens which receive the sliding plates, the structure would, as previously mentioned, be operative, although not so perfect, without them.

Having thus described my invention, what I claim as new therein, and desire to secure by Letters Patent, is

1. In a device of the class described, the combination with a door, of a pair of plates carried on the car-body, and adapted for Enovement into and out of contact with said oor. A

2. In a device of the class described, the combination with a door, of a air of sliding plates carried by the door-1- am s, and means whereby said plates are moved into and out of contact with said door.

3. In a device of the class described, the combination with a door adapted to fit against the inner surface of the door-jambs, a sliding plate on each door-jamb and means for moving said plates into and out of contact with said door.

A. In a device of the class described, the combination with a door having battens arranged vertically in pairs near each edge, of plates carried by the door-jambs in line with the recesses between each pair of battens, and means for sliding said plates into the recesses between said battens.

5. In a device of the class described, the combination with a door, of studs carried by the door-jambs, plates having lateral slots therein slidably mounted on said studs, and means for sliding said plates into and out of contact with said door.

6. In a device of the class described the combination with the door, of a sliding plate carried by the doorjamb, a stud on said plate, a latch hinged to said door and a latchblock having a slot therein extending from one upper corner to the opposite lower corner carried by said latch, said latch and latchblock being adapted to engage said stud substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN w. HAWN.

Witnesses:

A. M. MAXWELL, BENJ. S. BROWN. 

